Qwen3 Technical Report

Team, 2025, Qwen3 Technical Report (arXiv preprint arXiv:2505.09388)

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3.2 Pre-training Stage

  1. What were the three stages of Qwen3 pretraining?
    General: over 30T tokens at 4,096-token length. Reasoning: about 5T higher-quality tokens with more STEM, code, reasoning and synthetic data, and faster learning-rate decay. Long context: hundreds of billions of tokens at 32,768 length, with RoPE base raised from 10,000 to 1,000,000, plus YaRN and Dual Chunk Attention for 4× longer contexts at inference.

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